mirror of https://github.com/acidanthera/audk.git
146 lines
3.9 KiB
C
146 lines
3.9 KiB
C
/** @file
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The module entry point for Tcg configuration module.
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Copyright (c) 2011, Intel Corporation. All rights reserved.<BR>
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This program and the accompanying materials
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are licensed and made available under the terms and conditions of the BSD License
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which accompanies this distribution. The full text of the license may be found at
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http://opensource.org/licenses/bsd-license.php
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THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
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WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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**/
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#include "TcgConfigImpl.h"
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/**
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The entry point for Tcg configuration driver.
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@param[in] ImageHandle The image handle of the driver.
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@param[in] SystemTable The system table.
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@retval EFI_ALREADY_STARTED The driver already exists in system.
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@retval EFI_OUT_OF_RESOURCES Fail to execute entry point due to lack of resources.
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@retval EFI_SUCCES All the related protocols are installed on the driver.
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@retval Others Fail to install protocols as indicated.
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**/
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EFI_STATUS
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EFIAPI
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TcgConfigDriverEntryPoint (
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IN EFI_HANDLE ImageHandle,
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IN EFI_SYSTEM_TABLE *SystemTable
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)
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{
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EFI_STATUS Status;
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TCG_CONFIG_PRIVATE_DATA *PrivateData;
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EFI_TCG_PROTOCOL *TcgProtocol;
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Status = TisPcRequestUseTpm ((TIS_TPM_HANDLE) (UINTN) TPM_BASE_ADDRESS);
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if (EFI_ERROR (Status)) {
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DEBUG ((EFI_D_ERROR, "TPM not detected!\n"));
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return Status;
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}
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Status = gBS->LocateProtocol (&gEfiTcgProtocolGuid, NULL, (VOID **) &TcgProtocol);
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if (EFI_ERROR (Status)) {
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TcgProtocol = NULL;
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}
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Status = gBS->OpenProtocol (
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ImageHandle,
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&gEfiCallerIdGuid,
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NULL,
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ImageHandle,
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ImageHandle,
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EFI_OPEN_PROTOCOL_TEST_PROTOCOL
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);
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if (!EFI_ERROR (Status)) {
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return EFI_ALREADY_STARTED;
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}
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//
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// Create a private data structure.
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//
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PrivateData = AllocateCopyPool (sizeof (TCG_CONFIG_PRIVATE_DATA), &mTcgConfigPrivateDateTemplate);
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if (PrivateData == NULL) {
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return EFI_OUT_OF_RESOURCES;
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}
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PrivateData->TcgProtocol = TcgProtocol;
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PrivateData->HideTpm = (BOOLEAN) (PcdGetBool (PcdHideTpmSupport) && PcdGetBool (PcdHideTpm));
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//
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// Install TCG configuration form
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//
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Status = InstallTcgConfigForm (PrivateData);
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if (EFI_ERROR (Status)) {
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goto ErrorExit;
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}
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//
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// Install private GUID.
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//
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Status = gBS->InstallMultipleProtocolInterfaces (
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&ImageHandle,
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&gEfiCallerIdGuid,
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PrivateData,
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NULL
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);
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if (EFI_ERROR (Status)) {
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goto ErrorExit;
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}
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return EFI_SUCCESS;
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ErrorExit:
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if (PrivateData != NULL) {
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UninstallTcgConfigForm (PrivateData);
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}
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return Status;
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}
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/**
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Unload the Tcg configuration form.
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@param[in] ImageHandle The driver's image handle.
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@retval EFI_SUCCESS The Tcg configuration form is unloaded.
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@retval Others Failed to unload the form.
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**/
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EFI_STATUS
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EFIAPI
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TcgConfigDriverUnload (
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IN EFI_HANDLE ImageHandle
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)
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{
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EFI_STATUS Status;
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TCG_CONFIG_PRIVATE_DATA *PrivateData;
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Status = gBS->HandleProtocol (
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ImageHandle,
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&gEfiCallerIdGuid,
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(VOID **) &PrivateData
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);
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if (EFI_ERROR (Status)) {
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return Status;
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}
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ASSERT (PrivateData->Signature == TCG_CONFIG_PRIVATE_DATA_SIGNATURE);
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gBS->UninstallMultipleProtocolInterfaces (
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&ImageHandle,
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&gEfiCallerIdGuid,
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PrivateData,
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NULL
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);
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UninstallTcgConfigForm (PrivateData);
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return EFI_SUCCESS;
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}
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